10 Symptoms of Angioedema
Symptom #3: Stridor
Stridor is a term that describes the high-pitched sound that occurs when there is turbulent air flow in the low bronchial tree or larynx. The presence of stridor usually means that the airway is narrowed or obstructed. It can occur during inspiration, expiration, or biphasic (both inspiration and expiration).
It can be seen in cases such as croup, epiglottitis, lodged foreign body in the airway, laryngeal tumor, airway edema, and more. In angioedema, the swelling of the airway due to the allergic reaction can result in stridor. Tracheal intubation may be required to prevent respiratory arrest.
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